I keep getting the error code 801 when trying to go to build mode. I tried to build on the same lot but in a new save and it worked there, so I think it's just the one save that doesn't work. Edit: ...
@ainokallio--try deleting localthumbcache.package from documents / electronic arts / the sims 4, and repairing your game through Origin. then test again without mods/cc.
it could be some outdated mods that might have messed with the save. you could also try a backup/earlier version of the save, if you have any from before the error.
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